Wheel bearings have no service interval; they commonly last 85,000 to 150,000 miles and are replaced when they start to hum or growl, with the classic sign being a droning noise that gets louder with road speed and can change when you steer left or right. That sound is covered in our humming noise that changes with speed guide; this guide covers the maintenance side — how long they last, how to check one, and why a failing bearing is worth replacing promptly rather than driven on.
What a Wheel Bearing Does
Each wheel hub contains a sealed ring of steel balls or rollers that lets the wheel spin freely while carrying the car’s weight. Dirt, water ingress and impacts (a pothole or curb strike) wear the grease and the races, and the bearing slowly becomes rough. On many modern cars it’s a sealed, pre-greased hub assembly that isn’t serviced — it’s simply replaced when it wears.
Typical Lifespan
| Situation | Typical life |
|---|---|
| Normal driving, good roads | 100,000 – 150,000 miles |
| Rough roads, potholes, water crossings | Often 85,000 miles or less |
| After a hard curb or pothole strike | Can fail early — listen for new noise |
Warning Signs
- A humming or growling that rises with speed — see our humming noise that changes with speed guide. It often gets louder in one direction of a turn.
- A loose or wobbly feeling in the steering or vibration through the wheel at speed — see our steering wheel shakes at highway speeds guide.
- Uneven tyre wear — see our uneven tyre wear patterns guide.
- An ABS or wheel-speed fault if the bearing’s sensor ring is damaged — see our ABS light on guide and wheel speed sensor codes guide.
- Play when the wheel is rocked at the top and bottom with the wheel off the ground.
A Simple Check
- Raise the corner safely on axle stands and grip the tyre at 12 and 6 o’clock — any clunk or movement points at a bearing or suspension joint.
- Spin the wheel by hand and listen and feel for a rough, grinding sensation.
- Test on the road: a gentle weave left and right at moderate speed — if the noise changes, the loaded side’s bearing is the suspect.
Never work under a vehicle supported only by a jack. Use axle stands on firm, level ground, chock the wheels that stay down, and leave the car in gear or Park with the handbrake on. A jack lifts; stands hold.
Can I Keep Driving With a Bad Wheel Bearing?
For a short time only. A failing bearing generates heat and can eventually seize or let the wheel wobble, which is dangerous at speed. It also wears alignment-sensitive parts — see our signs your car needs a wheel alignment guide. Replace it as soon as the noise appears.
When to See a Mechanic
As soon as you hear a bearing-type hum, especially if it’s getting louder. After replacement, rotate the tyres on schedule — see our how often to rotate your tyres guide — and check the alignment. More in our steering & suspension section.
Frequently Asked Questions
How often should wheel bearings be replaced?
There’s no schedule; they commonly last 85,000 to 150,000 miles and are replaced when they start to hum, growl or show play.
What does a bad wheel bearing sound like?
A humming or growling noise that rises with road speed and often changes when you steer to one side.
Can I drive on a bad wheel bearing?
Only briefly. It can overheat, cause wobble or seize, so it should be replaced promptly.
Can a pothole damage a wheel bearing?
Yes — hard impacts can damage the races and shorten the bearing’s life.
How much does it cost to replace a wheel bearing?
Typically $250–$600 per wheel, depending on the vehicle and whether it’s a press-in bearing or a complete hub assembly.
